static void Main()
{
Console.WriteLine(FileExtension.GetFileExtension("example"));
Console.WriteLine(FileExtension.GetFileExtension("example.pdf"));
Console.WriteLine(FileExtension.GetFileExtension("example.new.pdf"));
Console.WriteLine(FileExtension.GetFileNameWithoutExtension("example"));
Console.WriteLine(FileExtension.GetFileNameWithoutExtension("example.pdf"));
Console.WriteLine(FileExtension.GetFileNameWithoutExtension("example.new.pdf"));
Console.WriteLine("Distance in the 2D space = {0:f2}",
Figure.CalcDistance2D(1, -2, 3, 4));
Console.WriteLine("Distance in the 3D space = {0:f2}",
Figure.CalcDistance3D(5, 2, -1, 3, -6, 4));
Figure.Width = 3;
Figure.Height = 4;
Figure.Depth = 5;
Console.WriteLine("Volume = {0:f2}", Figure.CalcVolume());
Console.WriteLine("Diagonal XYZ = {0:f2}", Figure.CalcDiagonalXYZ());
Console.WriteLine("Diagonal XY = {0:f2}", Figure.CalcDiagonalXY());
Console.WriteLine("Diagonal XZ = {0:f2}", Figure.CalcDiagonalXZ());
Console.WriteLine("Diagonal YZ = {0:f2}", Figure.CalcDiagonalYZ());
}